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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Infineon Technologies AUIRFL024N

Name: AUIRFL024N
Brand: Infineon Technologies
SKU: AUIRFL024N
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRFL024N

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-261-4, TO-261AA

Datasheet:: AUIRFL024N.pdf

Description:: MOSFET N-CH 55V 2.8A SOT-223

Quantity:: RFQ Add To RFQ list

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Inventory:3,628

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Product details

Overview

AUIRFL024N from Infineon Technologies is an automotive-grade N-channel enhancement-mode HEXFET® Power MOSFET in SOT-223 package, rated for 55 V V(BR)DSS, 75 mΩ RDS(on) max at VGS = 10 V, 2.8 A continuous drain current at TA = 25°C, and qualified to AEC-Q101 standards. It serves as a high-reliability low-side switch in 12 V automotive power distribution systems including body control modules and lighting drivers.

For engineers reviewing the AUIRFL024N datasheet, AUIRFL024N pinout, AUIRFL024N application, or AUIRFL024N equivalent, key selection criteria include its 150°C junction temperature rating, fully avalanche-rated operation, dynamic dV/dt capability, and SOT-223 thermal performance under PCB-mount conditions.

Technical Context

This MOSFET employs advanced planar silicon technology optimized for automotive thermal cycling and long-term reliability. Its cellular layout achieves low on-resistance per die area while maintaining robust avalanche energy handling (EAS = 214 mJ) and fast switching (Qg = 18.3 nC, tr = 13.4 ns).

The device integrates a co-packaged intrinsic body diode with trr = 35–53 ns and Qrr = 50–75 nC, enabling efficient freewheeling in inductive load circuits. Gate threshold voltage (VGS(th) = 2.0–4.0 V) supports direct drive from standard 3.3 V/5 V microcontrollers without level-shifting.

Key Specifications

Parameter	Value and Actual Design Meaning
V(BR)DSS	55 V - Withstands up to 55 V drain-source blocking voltage before avalanche onset; suitable for 12 V automotive systems with load-dump transients.
RDS(on) max	75 mΩ @ VGS = 10 V - Delivers ≤190 mW conduction loss at 2.8 A DC, enabling thermally constrained SOT-223 PCB layouts.
ID cont	2.8 A @ TA = 25°C - Continuous current rating under standard board-mount conditions; derates linearly above 25°C ambient.
EAS	214 mJ - Single-pulse avalanche energy limit; allows safe unclamped inductive switching in relay or solenoid drivers.
Qg	18.3 nC - Total gate charge determines driver strength requirement; compatible with low-power logic-level gate drivers.
trr / Qrr	35–53 ns / 50–75 nC - Body diode recovery characteristics define minimum dead-time in half-bridge configurations.
TJ max	150°C - Maximum operating junction temperature; enables deployment in under-hood environments without active cooling.

Pinout & Package

SOT-223 package with exposed drain pad for enhanced thermal dissipation; standardized 4-pin outline per EIA-418-1, featuring gull-wing leads and flange-mounted construction.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Drain)	Main current-carrying terminal	Internally connected to exposed metal tab; must be soldered to large copper pour for thermal management.
Pin 2 (Gate)	Control input	High-impedance MOS gate requiring <100 nA leakage current; sensitive to ESD and requires series resistor for ringing suppression.
Pin 3 (Source)	Reference node for gate drive	Common return path for load current and gate drive loop; critical for minimizing ground bounce in switching noise.
Pin 4 (Drain)	Secondary drain connection	Electrically identical to Pin 1; provides redundant current path and mechanical stability for PCB mounting.

Key Features

Feature	Design Value
Automotive qualification	AEC-Q101 certified for engine bay and chassis applications with guaranteed lifetime performance under thermal shock and humidity stress.
Fully avalanche rated	Rated for single-pulse avalanche energy up to 214 mJ without degradation; eliminates need for external snubbers in inductive switching.
Low RDS(on) × Qg figure of merit	1.38 Ω·nC - Balances conduction and switching losses for optimal efficiency in 10–100 kHz PWM applications.
Dynamic dV/dt immunity	Rated for >10 V/ns - Resists false turn-on during high-slew-rate transients common in automotive CAN/LIN bus environments.
Lead-free & RoHS compliant	Meets EU Directive 2011/65/EU and J-STD-020 reflow profile; compatible with lead-free assembly processes up to 260°C peak.

Applications

Body Control Module (BCM)

LED Headlamp Driver

Use Scenario: Switching 12 V power to door locks, window motors, and interior lighting loads.

IC Role / Device Role / Timing Role: Low-side power switch controlled by 3.3 V microcontroller GPIO with integrated pull-down.

Use Value: 75 mΩ RDS(on) limits self-heating to <190 mW at 2.8 A, eliminating need for heatsinks in compact BCM enclosures.

Use Scenario: Constant-current dimming of automotive LED headlamps via PWM-controlled buck stage.

IC Role / Device Role / Timing Role: Synchronous rectifier in high-frequency (≥50 kHz) buck converter output stage.

Use Value: Fast tr = 13.4 ns and low Qgd = 7.7 nC minimize switching losses and improve efficiency over discrete diode alternatives.

Engine Cooling Fan Controller

Start-Stop System Solenoid Driver

Use Scenario: Driving brushed DC cooling fans with inductive kickback during abrupt shutdown.

IC Role / Device Role / Timing Role: Unclamped inductive switch with built-in avalanche energy absorption.

Use Value: 214 mJ EAS rating safely clamps flyback energy from 100–200 mH fan windings without external TVS diodes.

Use Scenario: Controlling starter motor engagement solenoids during engine restart cycles.

IC Role / Device Role / Timing Role: High-reliability power switch subjected to repeated thermal cycling and vibration.

Use Value: AEC-Q101 qualification ensures >1,000 hours HTOL life at 150°C junction temperature under real-world start-stop duty cycles.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel automotive power MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL10DN5LF3	55 V, 10 mΩ RDS(on), SO-8 package, higher current (10 A ID)	Requires larger PCB footprint and different thermal interface; better suited for higher-power fan drivers	Select when >5 A continuous current or lower RDS(on) is required; not drop-in due to package and pinout mismatch
ON Semiconductor NTMFS4C09NT1G	40 V, 9.5 mΩ RDS(on), PowerTrench® SO-8FL, 150°C TJ	Limited to 40 V systems; unsuitable for 12 V load-dump scenarios exceeding 45 V	Prefer only in 5–24 V subsystems where lower on-resistance justifies reduced voltage margin

Compared with STL10DN5LF3 and NTMFS4C09NT1G, AUIRFL024N offers optimal balance of voltage margin (55 V), thermal robustness (SOT-223 + 150°C), and cost-effective packaging for sub-3 A automotive loads-making it ideal for space-constrained BCM and lighting nodes.

Availability

AUIRFL024N is available at Aetrix Electronics and suitable for body control modules, LED lighting drivers, engine cooling fan controllers, and start-stop system solenoid drivers requiring stable component supply across automotive production lifecycles.

Supply support for AUIRFL024N includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with leadership in silicon and wide-bandgap power devices.

AUIRFL024N belongs to the automotive-qualified HEXFET® Power MOSFET product line, engineered specifically for reliable low-voltage switching in harsh automotive environments including under-hood and chassis applications.

FAQ

What is the maximum allowable gate-to-source voltage for AUIRFL024N?

The absolute maximum VGS rating is ±20 V. Operation beyond this range risks permanent gate oxide damage. Recommended drive voltage is 10 V for full enhancement, with 4.0 V upper limit for VGS(th) to ensure consistent turn-on across temperature and process variation.

Can AUIRFL024N be used in synchronous rectification applications?

Yes - its low RDS(on) of 75 mΩ and fast body diode (trr = 35–53 ns, Qrr = 50–75 nC) support synchronous rectification in buck converters up to 100 kHz. However, external gate drive timing must account for Qgd = 7.7 nC to avoid shoot-through during transitions.

Is AUIRFL024N suitable for hot-swap applications?

No - it lacks integrated current limiting, thermal shutdown, or soft-start circuitry. While its 2.8 A ID rating and 214 mJ EAS provide margin, dedicated hot-swap controllers (e.g., TPS23521) are required for inrush current control and fault reporting.

Does AUIRFL024N require a gate resistor in typical automotive switching circuits?

Yes - a 10–24 Ω series gate resistor is recommended to dampen ringing caused by PCB trace inductance and MOSFET input capacitance (Ciss = 400 pF). This improves EMI performance and prevents spurious turn-on from dv/dt coupling in noisy automotive harness environments.

AUIRFL024N Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: TO-261-4, TO-261AA

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 55 V

Current - Continuous Drain (Id) @ 25°C:: 2.8A (Ta)

Drive Voltage (Max Rds On, Min Rds On):: 10V

Rds On (Max) @ Id, Vgs:: 75mOhm @ 2.8A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 18.3 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 400 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 1W (Ta)

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223

AUIRFL024N FAQ

1.How can I place an order for AUIRFL024N through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRFL024N on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for AUIRFL024N reliable?

The price and inventory of AUIRFL024N are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRFL024N is usually 5 days.

3.What payment methods are accepted for AUIRFL024N?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRFL024N transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRFL024N?

AUIRFL024N orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRFL024N order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for AUIRFL024N?

For technical support, including AUIRFL024N datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRFL024N requirements.

6.How does Aetrix verify that AUIRFL024N is sourced from the original manufacturer or authorized distributors?

All AUIRFL024N products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AUIRFL024N meets industry standards.

7.What is the process for return or replacement of AUIRFL024N?

All AUIRFL024N units undergo pre-shipment inspection (PSI). If there is an issue with AUIRFL024N, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The AUIRFL024N part is unused and in its original packaging.

Return procedure for AUIRFL024N:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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